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Berkeley DB: DB_ENV->set_tx_timestamp
DB_ENV->set_tx_timestamp
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#include <db.h>
int
DB_ENV->set_tx_timestamp(DB_ENV *dbenv, time_t *timestamp);
int
DB_ENV->get_tx_timestamp(DB_ENV *dbenv, time_t *timestampp);
Description: DB_ENV->set_tx_timestamp
Recover to the time specified by timestamp rather than to the
most current possible date.
Once a database environment has been upgraded to a new version of Berkeley DB
involving a log format change (see Upgrading Berkeley DB installations), it is no longer possible to recover
to a specific time before that upgrade.
The DB_ENV->set_tx_timestamp method configures operations performed using the specified
DB_ENV handle, not all operations performed on the underlying
database environment.
The DB_ENV->set_tx_timestamp method may not be called after the DB_ENV->open method is
called.
The DB_ENV->set_tx_timestamp method
returns a non-zero error value on failure
and 0 on success.
Parameters
- timestamp
- The timestamp parameter references the memory location where the
recovery timestamp is located.
The timestamp parameter should be the number of seconds since 0
hours, 0 minutes, 0 seconds, January 1, 1970, Coordinated Universal
Time; that is, the Epoch.
Errors
The DB_ENV->set_tx_timestamp method
may fail and return one of the following non-zero errors:
- EINVAL
- If it is not possible to recover to the specified time using the log files
currently present in the environment; or if an
invalid flag value or parameter was specified.
Description: DB_ENV->get_tx_timestamp
The DB_ENV->get_tx_timestamp method returns the recovery timestamp.
The DB_ENV->get_tx_timestamp method may be called at any time during the life of the
application.
The DB_ENV->get_tx_timestamp method
returns a non-zero error value on failure
and 0 on success.
Parameters
- timestampp
- The DB_ENV->get_tx_timestamp method returns the
recovery timestamp in timestampp.
Class
DB_ENV, DB_TXN
See Also
Transaction Subsystem and Related Methods
Copyright (c) 1996-2004 Sleepycat Software, Inc. - All rights reserved.
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